Lex Fridman Podcast

Andrew Scull, historian of psychiatry and professor emeritus at UC San Diego, traces mental healthcare’s troubled history. They explore asylums, eugenics, Nazi patient murders, lobotomies, insulin coma therapy, ECT, Freud, Jung, CBT, antipsychotics, and antidepressants. The conversation examines psychiatry’s diagnostic crisis, institutional collapse, treatment controversies, and possible paths forward.

David Heinemeier Hansson, creator of Ruby on Rails, Omarchy Linux builder, CTO and racecar driver. He dives into agentic programming and how AI agents change coding workflows. He contrasts vibe coding with disciplined engineering. He explains Omachi Linux as an agent-first, fast-install system and debates open source, model tradeoffs, voice interaction, and where human taste still matters.

Khabib Nurmagomedov, undefeated UFC lightweight champion and Dagestan-born wrestling phenom. He recounts rugged mountain training, Dagestan’s warrior culture and coaching system. He talks top pressure fighting, the Conor and final Gaethje fights, building a training base, coaching Islam Makhachev, and his love of football and faith.

Gary Gallagher, a University of Virginia historian of the American Civil War, talks about slavery as the driving cause and how territorial politics and the 1860 election led to secession. He covers Lincoln and Grant’s leadership, Lee’s Virginia loyalty and military choices, battlefield turning points like Gettysburg and Vicksburg, and how memory, monuments, and Reconstruction shaped modern American identity.

Anthony Kaldellis, historian of the Roman and Byzantine Empires and author of The New Roman Empire, offers a lively tour of Rome's long continuity. He discusses why the Eastern state remained Roman, Constantine’s founding of Constantinople, how taxation and military reforms sustained the state, the role of Christianity, and the shocks that finally toppled imperial resilience.

Don Lincoln, a Fermilab particle physicist and science communicator, explains big puzzles in fundamental physics. He discusses unification of forces, how colliders and detectors reveal particles, the Higgs, antimatter production and asymmetry, the mystery of dark matter, and the baffling nature of dark energy. Short, wide-ranging conversations bridge experiments, theory, and the future of the field.

Jean-Baptiste Kempf, VLC lead developer and VideoLAN president, joins Kieran Kunhya, FFmpeg contributor and codec engineer. They explore why VLC opens bizarre files, how codecs and containers quietly power online video, and why FFmpeg became universal media plumbing. The chat also hits reverse engineering, handwritten assembly, ad-free ideals, open source drama, and the future of streaming, XR, and archiving.

Lars Brownworth, historian and author of The Sea Wolves, dives into the Viking Age at full speed. He explores Lindisfarne, Ragnar Lothbrok, berserkers, Valhalla, and the Great Heathen Army. There’s also longships, Leif Erikson in North America, Rollo founding Normandy, and Vikings reaching Byzantium as traders, raiders, and royal bodyguards.

Jensen Huang, NVIDIA co-founder and CEO, talks about building the company behind the AI computing boom. He gets into CUDA’s risky rise, why AI now depends on giant systems built across chips, power, networking, and software, and what supply chains, China, TSMC, open source, gaming, robotics, and even AI factories in space reveal about the future.

Jeff Kaplan, legendary designer behind World of Warcraft and Overwatch, talks about his path from rejected writer and EverQuest obsessive to shaping Blizzard’s biggest worlds. He revisits WoW’s creation, Titan’s collapse, and Overwatch’s fast reinvention. He also gets into online toxicity, small-team creativity, and building The Legend of California.